Rails offers a variety of methods for generating unique DOM IDs
and classes for elements on a page.
One such method is the dom_id method,
which can generate a unique ID for a specific object or model.
However, by default, the dom_id method
only generates an ID
and does not include any classes.
Recently, however,
Rails has added a new feature
that allows the dom_id method
to also accept a class.
This allows developers to generate both an ID
and a class for an element without the need to use different methods for generating IDs
and classes.
Before
Before this feature was added,
developers would have to use the dom_id method to generate an ID,
and then use a separate method such as dom_class to generate a class.
Here,
developers would have to use separate methods to generate both an ID
and a class for an element.
Let’s assume we have a User model
and we want to generate the dom_id
and dom_class for it.
We would write the following code:
<div id="<%= dom_id(@user) %>" class="<%= dom_class(@user) %>">
<!-- user related content -->
</div>As we can see, this requires two separate lines of code, one for the ID and one for the class.
After
With the new feature, developers can now generate both an ID
and a class in a single line of code using the dom_id method.
For example:
<div <%= dom_id(@user, :class) %>>
<!-- user related content -->
</div>As we can see, this is a much more concise and efficient way of generating both an ID and a class.
Additionally, if we want to add a custom class, we can pass it as a second parameter.
<div <%= dom_id(@user, class: "custom-class") %>>
<!-- user related content -->
</div>Now, they can use the dom_id method to generate both an ID
and a class at the same time,
saving them a few keystrokes.
Overall, the ability for the dom_id method to accept
a class in Rails is a welcome addition for developers.
With this PR, developers can write more efficient
and maintainable code.
